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In economics, an externality or external cost is an Indirect costs or benefit to an uninvolved third party that arises as an effect of another party's (or parties') activity. Externalities can be considered as unpriced components that are involved in either consumer or producer market transactions. Air pollution from is one example. The cost of air pollution to society is not paid by either the producers or users of motorized transport to the rest of society. Water pollution from mills and factories is another example. All (water) consumers are made worse off by pollution but are not compensated by the market for this damage. A positive externality is when an individual's consumption in a market increases the well-being of others, but the individual does not charge the third party for the benefit. The third party is essentially getting a free product. An example of this might be the apartment above a bakery receiving some free heat in winter. The people who live in the apartment do not compensate the bakery for this benefit.Gruber, J. (2018). Public Finance & Public Policy
The concept of externality was first developed by Alfred Marshall in the 1890s and achieved broader attention in the works of economist Arthur Pigou in the 1920s. The prototypical example of a negative externality is environmental pollution. Pigou argued that a tax, equal to the marginal damage or marginal external cost, (later called a "Pigovian tax") on negative externalities could be used to reduce their incidence to an efficient level. Subsequent thinkers have debated whether it is preferable to tax or to regulate negative externalities, the optimally efficient level of the Pigouvian taxation, and what factors cause or exacerbate negative externalities, such as providing investors in corporations with limited liability for harms committed by the corporation.
Externalities often occur when the production or consumption of a product or service's private price equilibrium cannot reflect the true costs or benefits of that product or service for society as a whole. This causes the externality competitive equilibrium to not adhere to the condition of Pareto optimality. Thus, since resources can be better allocated, externalities are an example of market failure.9781319205843, Worth Publishers. ISBN 9781319205843
Externalities can be either positive or negative. Governments and institutions often take actions to internalize externalities, thus market-priced transactions can incorporate all the benefits and costs associated with transactions between economic agents.Jaeger, William. Environmental Economics for Tree Huggers and Other Skeptics, p. 80 (Island Press 2012): "Economists often say that externalities need to be 'internalized,' meaning that some action needs to be taken to correct this kind of market failure." The most common way this is done is by imposing taxes on the producers of this externality. This is usually done similar to a quote where there is no tax imposed and then once the externality reaches a certain point there is a very high tax imposed. However, since regulators do not always have all the information on the externality it can be difficult to impose the right tax. Once the externality is internalized through imposing a tax the competitive equilibrium is now Pareto optimal.
Additionally, the American economist Frank Knight contributed to the understanding of externalities through his writings on social costs and benefits in the 1920s and 1930s. Knight's work highlighted the inherent challenges in quantifying and mitigating externalities within market systems, underscoring the complexities involved in achieving optimal resource allocation. Throughout the 20th century, the concept of externalities continued to evolve with advancements in economic theory and empirical research. Scholars such as Ronald Coase and Harold Hotelling made significant contributions to the understanding of externalities and their implications for market efficiency and welfare.
The recognition of externalities as a pervasive phenomenon with wide-ranging implications has led to its incorporation into various fields beyond economics, including environmental science, public health, and urban planning. Contemporary debates surrounding issues such as climate change, pollution, and resource depletion underscore the enduring relevance of the concept of externalities in addressing pressing societal challenges.
In microeconomic theory, externalities are factored into competitive equilibrium analysis as the social effect, as opposed to the private market which only factors direct economic effects. The social effect of economic activity is the sum of the indirect (the externalities) and direct factors. The Pareto optimum, therefore, is at the levels in which the social marginal benefit equals the social marginal cost.
Externalities are the residual effects of economic activity on persons not directly participating in the transaction. The consequences of producer or consumer behaviors that result in external costs or advantages imposed on others are not taken into account by market pricing and can have both positive and negative effects. To further elaborate on this, when expenses associated with the production or use of an item or service are incurred by others but are not accounted for in the market price, this is known as a negative externality. The health and well-being of local populations may be negatively impacted by environmental deterioration resulting from the extraction of natural resources. Comparably, the tranquility of surrounding inhabitants might be disturbed by noise pollution from industry or transit, which lowers their quality of life. On the other hand, positive externalities occur when the activities of producers or consumers benefit other parties in ways that are not accounted for in market exchanges. A prime example of a positive externality is education, as those who invest in it gain knowledge and production for society as a whole in addition to personal profit."Microeconomics" by Robert S. Pindyck and Daniel L. Rubinfeld
Government involvement is frequently necessary to address externalities. This can be done by enacting laws, Pigovian taxes, or other measures that encourage positive externalities or internalize external costs. Through the integration of externalities into economic research and policy formulation, society may endeavor to get results that optimize aggregate well-being and foster sustainable growth.
Although positive externalities may appear to be beneficial, while Pareto efficient, they still represent a failure in the market as it results in the production of the good falling under what is optimal for the market. By allowing producers to recognise and attempt to control their externalities production would increase as they would have motivation to do so.William H. Sandholm, Negative Externalities and Evolutionary Implementation, The Review of Economic Studies, Volume 72, Issue 3, July 2005, Pages 885–915, doi: 10.1111/j.1467-937X.2005.00355.x With this comes the Free Rider Problem. The Free Rider Problem arises when people overuse a shared resource without doing their part to produce or pay for it. It represents a failure in the market where goods and services are not able to be distributed efficiently, allowing people to take more than what is fair. For example, if a farmer has honeybees a positive externality of owning these bees is that they will also pollinate the surrounding plants. This farmer has a next door neighbour who also benefits from this externality even though he does not have any bees himself. From the perspective of the neighbour he has no incentive to purchase bees himself as he is already benefiting from them at zero cost. But for the farmer, he is missing out on the full benefits of his own bees which he paid for, because they are also being used by his neighbour.
There are a number of theoretical means of improving overall social utility when negative externalities are involved. The market-driven approach to correcting externalities is to internalize third party costs and benefits, for example, by requiring a polluter to repair any damage caused. But in many cases, internalizing costs or benefits is not feasible, especially if the true monetary values cannot be determined.
Laissez-faire economists such as Friedrich Hayek and Milton Friedman sometimes refer to externalities as "neighborhood effects" or "spillovers", although externalities are not necessarily minor or localized. Similarly, Ludwig von Mises argues that externalities arise from lack of "clear personal property definition."
| +Classification of externalities | Consumption | Production | |
| Negative | Negative externalities in consumption | Negative externalities in production | |
| Positive | Positive externalities in consumption | Positive externalities in production |
Clearly, we have compiled a record of serious failures in recent technological encounters with the environment. In each case, the new technology was brought into use before the ultimate hazards were known. We have been quick to reap the benefits and slow to comprehend the costs.Barry Commoner "Frail Reeds in a Harsh World". New York: The American Museum of Natural History. Natural History. Journal of the American Museum of Natural History'', Vol. LXXVIII No. 2, February, 1969, p. 44Many negative externalities are related to the environmental consequences of production and use. The article on environmental economics also addresses externalities and how they may be addressed in the context of environmental issues.
A positive production externality occurs when a firm's production increases the well-being of others but the firm is uncompensated by those others, while a positive consumption externality occurs when an individual's consumption benefits other but the individual is uncompensated by those others.Gruber, J. (2010) Public Finance and Public Policy, Worth Publishers. G-8 (Glossary)
Collective solutions or public policy are implemented to regulation activities with positive or negative externalities.
Conspicuous consumption (originally articulated by Thorstein Veblen, 1899) refers to the consumption of goods or services primarily for the purpose of displaying social status or wealth. In simpler terms, individuals engange in conspicuous consumption to signal their economic standing or to gain social recognition. Positional goods (introduced by Hirsch, 1977) are such goods, whose value is heavily contingent upon how they compare to similar goods owned by others. Their desirability is or derived utility is intrinsically tied to their relative scarcity or exclusivity within a particular social context.
The economic concept of Positional externalities originates from Duesenberry's Relative Income Hypothesis. This hypothesis challenges the conventional microeconomic model, as outlined by the Common Pool Resource (CPR) mechanism, which typically assumes that an individual's utility derived from consuming a particular good or service remains unaffected by other's consumption choices. Instead, Duesenberry posits that individuals gauge the utility of their consumption based on a comparison with other consumption bundles, thus introducing the notion of relative income into economic analysis. Consequently, the consumption of positional goods becomes highly sought after, as it directly impacts one's perceived status relative to others in their social circle.
Example: consider a scenario where individuals within a social group vie for the latest luxury cars. As one member acquires a top-of-the-line vehicle, others may feel compelled to upgrade their own cars to preserve their status within the group. This cycle of competitive consumption can result in inefficient allocation of resources and exacerbate income inequality within society.
The consumption of positional goods engenders negative externalities, wherein the acquisition of such goods by one individual diminishes the utility or value of similar goods held by others within the same reference group. This positional externality, can lead to a cascade of overconsumption, as individuals strive to maintain or improve their relative position through excessive spending.
Positional externalities are related, but not similar to Percuniary externalities.
Frank notes that treating positional externalities like other externalities might lead to "intrusive economic and social regulation." He argues, however, that less intrusive and more efficient means of "limiting the costs of expenditure cascades"—i.e., the hypothesized increase in spending of middle-income families beyond their means "because of indirect effects associated with increased spending by top earners"—exist; one such method is the personal income tax.
The effect that rising demand has on prices in marketplaces with intense competition is a typical illustration of pecuniary externalities. Prices rise in response to shifts in consumer preferences or income levels, which raise demand for a product and benefit suppliers by increasing sales and profits. But other customers who now have to pay more for identical goods might also suffer from this price hike. As a result, consumers who were not involved in the initial transaction suffer a monetary externality in the form of diminished buying power, while producers profit from increased prices. Furthermore, markets with economies of scale or network effects may experience pecuniary externalities. For example, when it comes to network products, like social media platforms or communication networks, the more people use the technology or engage in it, the more valuable the product becomes. Consequently, early adopters could gain financially from positive pecuniary externalities such as enhanced network effects or greater resale prices of related products or services. As a conclusion, pecuniary externalities draw attention to the intricate relationships that exist between market players and the effects that market transactions have on distribution. Comprehending pecuniary externalities is essential for assessing market results and formulating policies that advance economic efficiency and equality, even if they might not have the same direct impact on welfare or resource allocation as traditional externalities.
These externalities occur when technology spillovers from the acts of one economic agent impact the production or consumption potential of another agency. Depending on their nature, these spillovers may produce positive or negative externalities. The creation of new technologies that help people in ways that go beyond the original inventor is one instance of positive technical externalities. Let us examine the instance of research and development (R&D) inside the pharmaceutical sector. In addition to possible financial gain, a pharmaceutical company's R&D investment in the creation of a new medicine helps society in other ways. Better health outcomes, higher productivity, and lower healthcare expenses for both people and society at large might result from the new medication. Furthermore, the information created via research and development frequently spreads to other businesses and sectors, promoting additional innovation and economic expansion. For example, biotechnology advances could have uses in agriculture, environmental cleanup, or renewable energy, not just in the pharmaceutical industry. However, technical externalities can also take the form of detrimental spillovers that cost society money. Pollution from industrial manufacturing processes is a prime example. Businesses might not be entirely responsible for the expenses of environmental deterioration if they release toxins into the air or rivers as a result of their production processes. Rather, these expenses are shifted to society in the form of decreased quality of life for impacted populations, harm to the environment, and health risks. In addition, workers in some industries may experience job displacement and unemployment as a result of disruptive developments in labor markets brought about by technological improvements. For instance, individuals with outdated skills may lose their jobs as a result of the automation of manufacturing processes through robots and artificial intelligence, causing social and economic unrest in the affected areas.
What curve is added depends on the type of externality that is described, but not whether it is positive or negative. Whenever an externality arises on the production side, there will be two supply curves (private and social cost). However, if the externality arises on the consumption side, there will be two demand curves instead (private and social benefit). This distinction is essential when it comes to resolving inefficiencies that are caused by externalities.
If the consumers only take into account their own private cost, they will end up at price Pp and quantity Qp, instead of the more efficient price Ps and quantity Qs. These latter reflect the idea that the marginal social benefit should equal the marginal social cost, that is that production should be increased only as long as the marginal social benefit exceeds the marginal social cost. The result is that a free market is inefficiency since at the quantity Qp, the social benefit is less than the social cost, so society as a whole would be better off if the goods between Qp and Qs had not been produced. The problem is that people are buying and consuming too much steel.
This discussion implies that negative externalities (such as pollution) are more than merely an ethical problem. The problem is one of the disjunctures between marginal private and social costs that are not solved by the free market. It is a problem of societal communication and coordination to balance costs and benefits. This also implies that pollution is not something solved by competitive markets. Some collective solution is needed, such as a court system to allow parties affected by the pollution to be compensated, government intervention banning or discouraging pollution, or economic incentives such as .
If consumers only take into account their own private benefits from getting vaccinations, the market will end up at price Pp and quantity Qp as before, instead of the more efficient price Ps and quantity Qs. This latter again reflect the idea that the marginal social benefit should equal the marginal social cost, i.e., that production should be increased as long as the marginal social benefit exceeds the marginal social cost. The result in an free market is inefficiency since at the quantity Qp, the social benefit is greater than the societal cost, so society as a whole would be better off if more goods had been produced. The problem is that people are buying too few vaccinations.
The issue of external benefits is related to that of public goods, which are goods where it is difficult if not impossible to exclude people from benefits. The production of a public good has beneficial externalities for all, or almost all, of the public. As with external costs, there is a problem here of societal communication and coordination to balance benefits and costs. This also implies that vaccination is not something solved by competitive markets. The government may have to step in with a collective solution, such as subsidizing or legally requiring vaccine use. If the government does this, the good is called a merit good. Examples include policies to accelerate the introduction of electric vehicles or promote cycling, both of which benefit public health.
When resources are managed poorly or there are no well-defined property rights, externalities frequently result, especially when it comes to common pool resources. Due to their rivalrous usage and non-excludability, common pool resources including fisheries, forests, and grazing areas are vulnerable to abuse and deterioration when access is unrestrained. Without clearly defined property rights or efficient management structures, people or organizations may misuse common pool resources without thinking through the long-term effects, which might have detrimental externalities on other users and society at large. This phenomenon—famously referred to by Garrett Hardin as the "tragedy of the commons"—highlights people's propensity to put their immediate self-interests ahead of the sustainability of shared resources. "Environmental and Natural Resource Economics" by Tom Tietenberg and Lynne Lewis
Imagine, for instance, that there are no rules or limits in place and that several fishermen have access to a single fishing area. In order to maintain their way of life, fishermen are motivated to maximize their catches, which eventually causes overfishing and the depletion of fish populations. Fish populations decrease, and as a result, ecosystems are irritated, and the fishing industry experiences financial losses. These consequences have an adverse effect on subsequent generations and other people who depend on the resource. Nevertheless, the reduction of externalities linked to resources in common pools frequently necessitates the adoption of collaborative management approaches, like community-based management frameworks, tradable permits, and quotas. Communities can lessen the tragedy of the commons and encourage sustainable resource use and conservation for the benefit of current and future generations by establishing property rights or controlling access to shared resources. "Environmental and Natural Resource Economics" by Tom Tietenberg and Lynne Lewis
Another common cause of externalities is the presence of . Transaction costs are the cost of making an economic trade. These costs prevent economic agents from making exchanges they should be making. The costs of the transaction outweigh the benefit to the agent. When not all mutually beneficial exchanges occur in a market, that market is inefficient. Without transaction costs, agents could freely negotiate and internalize all externalities.
In order to further understand transactional costs, it is crucial to discuss Ronald Coase's methodologies. The standard theory of externalities, which holds that internalizing external costs or benefits requires government action through measures like Pigovian taxes or regulations, has been challenged by Coase. He presents the idea of transaction costs, which include the expenses related to reaching, upholding, and keeping an eye on agreements between parties. In the existence of externalities, transaction costs may hinder the effectiveness of private bargaining and result in worse-than-ideal results, according to Coase. He does, however, contend that private parties can establish mutually advantageous arrangements to internalize externalities without the involvement of the government, provided that there are minimal transaction costs and clearly defined property rights. Nevertheless, Coase uses the example of the distribution of property rights between a farmer and a rancher to support his claims. Assume there is a negative externality because the farmer's crops are harmed by the rancher's livestock. In a society where property rights are well-defined and transaction costs are minimal, the farmer and rancher can work out a voluntary agreement to settle the dispute. For example, the farmer may invest in preventive measures to lessen the impact, or the rancher could pay the farmer back for the harm the cattle caused. Coase's approach emphasizes how crucial it is to take property rights and transaction costs into account when managing externalities. He highlights that voluntary transactions between private parties can allow private parties to internalise externalities and that property rights distribution and transaction cost reduction can help make this possible. "The Problem of Social Cost" by Ronald Coase
A Pigovian tax (also called Pigouvian tax, after economist Arthur C. Pigou) is a tax imposed that is equal in value to the negative externality. In order to fully correct the negative externality, the per unit tax should equal the marginal external cost.9781319205843, Worth Publishers. ISBN 9781319205843 The result is that the market outcome would be reduced to the efficient amount. A side effect is that revenue is raised for the government, reducing the amount of distortionary taxes that the government must impose elsewhere. Governments justify the use of Pigovian taxes saying that these taxes help the market reach an efficient outcome because this tax bridges the gap between marginal social costs and marginal private costs.Barthold, Thomas A. (1994). "Issues in the Design of Excise Tax." Journal of Economic Perspectives. 133–51.
Some arguments against Pigovian taxes say that the tax does not account for all the transfers and regulations involved with an externality. In other words, the tax only considers the amount of externality produced.Nye, John (2008). "The Pigou Problem." The Cato Institute. 32–36. Another argument against the tax is that it does not take private property into consideration. Under the Pigovian system, one firm, for example, can be taxed more than another firm, even though the other firm is actually producing greater amounts of the negative externality.
Further arguments against Pigou disagree with his assumption every externality has someone at fault or responsible for the damages.Coase, R.H. (1960). "The Problem of Social Cost." The Journal of Law and Economics. 1-44. Coase argues that externalities are reciprocal in nature. Both parties must be present for an externality to exist. He uses the example of two neighbors. One neighbor possesses a fireplace, and often lights fires in his house without issue. Then one day, the other neighbor builds a wall that prevents the smoke from escaping and sends it back into the fire-building neighbor’s home. This illustrates the reciprocal nature of externalities. Without the wall, the smoke would not be a problem, but without the fire, the smoke would not exist to cause problems in the first place. Coase also takes issue with Pigou’s assumption of a “benevolent despot” government. Pigou assumes the government’s role is to see the external costs or benefits of a transaction and assign an appropriate tax or subsidy. Coase argues that the government faces costs and benefits just like any other economic agent, so other factors play into its decision-making.
However, the most common type of solution is a tacit agreement through the political process. Governments are elected to represent citizens and to strike political compromises between various interests. Normally governments pass laws and regulations to address pollution and other types of environmental harm. These laws and regulations can take the form of "command and control" regulation (such as enforcing standards and limiting ), or environmental pricing reform (such as or other Pigovian taxes, pollution market or the creation of markets for ecological services). The second type of resolution is a purely private agreement between the parties involved.
Government intervention might not always be needed. Traditional ways of life may have evolved as ways to deal with external costs and benefits. Alternatively, democratically run communities can agree to deal with these costs and benefits in an amicable way. Externalities can sometimes be resolved by agreement between the parties involved. This resolution may even come about because of the threat of government action.
The use of taxes and subsidies in solving the problem of externalities Correction tax, respectively subsidy, means essentially any mechanism that increases, respectively decreases, the costs (and thus price) associated with the activities of an individual or company.
The private-sector may sometimes be able to drive society to the socially optimal resolution. Ronald Coase argued that an efficient outcome can sometimes be reached without government intervention. Some take this argument further, and make the political argument that government should restrict its role to facilitating bargaining among the affected groups or individuals and to enforcing any contracts that result.
This result, often known as the Coase theorem, requires that
This theorem would not apply to the steel industry case discussed above. For example, with a steel factory that trespasses on the lungs of a large number of individuals with pollution, it is difficult if not impossible for any one person to negotiate with the producer, and there are large transaction costs. Hence the most common approach may be to regulate the firm (by imposing limits on the amount of pollution considered "acceptable") while paying for the regulation and enforcement with taxes. The case of the vaccinations would also not satisfy the requirements of the Coase theorem. Since the potential external beneficiaries of vaccination are the people themselves, the people would have to self-organize to pay each other to be vaccinated. But such an organization that involves the entire populace would be indistinguishable from government action.
In some cases, the Coase theorem is relevant. For example, if a logging is planning to clear-cut a forest in a way that has a negative impact on a nearby resort, the resort-owner and the logger could, in theory, get together to agree to a deal. For example, the resort-owner could pay the logger not to clear-cut – or could buy the forest. The most problematic situation, from Coase's perspective, occurs when the forest literally does not belong to anyone, or in any example in which there are not well-defined and enforceable property rights; the question of "who" owns the forest is not important, as any specific owner will have an interest in coming to an agreement with the resort owner (if such an agreement is mutually beneficial).
However, the Coase theorem is difficult to implement because Coase does not offer a negotiation method.Varian, Hal (1994). "A Solution to the Problem of Externalities When Agents Are Well Informed." The American Economic Review. Vol. 84 No. 5. Moreover, Coasian solutions are unlikely to be reached due to the possibility of running into the assignment problem, the holdout problem, the free-rider problem, or . Additionally, firms could potentially bribe each other since there is little to no government interaction under the Coase theorem.Marney, G.A. (1971). "The ‘Coase Theorem:' A Reexamination." Quarterly Journal of Economics.Vol. 85 No. 4. 718–23. For example, if one oil firm has a high pollution rate and its neighboring firm is bothered by the pollution, then the latter firm may move depending on incentives. Thus, if the oil firm were to bribe the second firm, the first oil firm would suffer no negative consequences because the government would not know about the bribing.
In a dynamic setup, Rosenkranz and Schmitz (2007) have shown that the impossibility to rule out Coasean bargaining tomorrow may actually justify Pigouvian intervention today. To see this, note that unrestrained bargaining in the future may lead to an underinvestment problem (the so-called hold-up problem). Specifically, when investments are relationship-specific and non-contractible, then insufficient investments will be made when it is anticipated that parts of the investments’ returns will go to the trading partner in future negotiations (see Hart and Moore, 1988). Hence, Pigouvian taxation can be welfare-improving precisely because Coasean bargaining will take place in the future. Antràs and Staiger (2012) make a related point in the context of international trade.
Kenneth Arrow suggests another private solution to the externality problem. He believes setting up a market for the externality is the answer. For example, suppose a firm produces pollution that harms another firm. A competitive market for the right to pollute may allow for an efficient outcome. Firms could bid the price they are willing to pay for the amount they want to pollute, and then have the right to pollute that amount without penalty. This would allow firms to pollute at the amount where the marginal cost of polluting equals the marginal benefit of another unit of pollution, thus leading to efficiency.
Frank Knight also argued against government intervention as the solution to externalities. He proposed that externalities could be internalized with privatization of the relevant markets. He uses the example of road congestion to make his point. Congestion could be solved through the taxation of public roads. Knight shows that government intervention is unnecessary if roads were privately owned instead. If roads were privately owned, their owners could set tolls that would reduce traffic and thus congestion to an efficient level. This argument forms the basis of the traffic equilibrium. This argument supposes that two points are connected by two different highways. One highway is in poor condition, but is wide enough to fit all traffic that desires to use it. The other is a much better road, but has limited capacity. Knight argues that, if a large number of vehicles operate between the two destinations and have freedom to choose between the routes, they will distribute themselves in proportions such that the cost per unit of transportation will be the same for every truck on both highways. This is true because as more trucks use the narrow road, congestion develops and as congestion increases it becomes equally profitable to use the poorer highway. This solves the externality issue without requiring any government tax or regulations.
The emissions fee and cap and trade systems are both incentive-based approaches to solving a negative externality problem.
Concerning these externalities, some, like the eco-businessman Paul Hawken, argue an orthodox economic line that the only reason why goods produced unsustainably are usually cheaper than goods produced sustainably is due to a hidden subsidy, paid by the non-monetized human environment, community or future generations.Hawken, Paul (1994) "The Ecology of Commerce" (Collins) These arguments are developed further by Hawken, Amory Lovins and Hunter Lovins to promote their vision of an environmental capitalist utopia in .Hawken, Paul; Amory and Hunter Lovins (2000) "Natural Capitalism: Creating the Next Industrial Revolution" (Back Bay Books)
In contrast, ecological economists, like Joan Martinez-Alier, appeal to a different line of reasoning.Martinez-Alier, Joan (2002) The Environmentalism of the Poor: A Study of Ecological Conflicts and Valuation. Cheltenham, Edward Elgar Rather than assuming some (new) form of capitalism is the best way forward, an older ecological economic critique questions the very idea of internalizing externalities as providing some corrective to the current system. The work by Karl William KappBerger, Sebastian (2017). The Social Costs of Neoliberalism: Essays on the Economics of K. William Kapp. Nottingham: Spokesman. argues that the concept of "externality" is a misnomer.Kapp, Karl William (1963) The Social Costs of Business Enterprise. Bombay/London, Asia Publishing House. In fact the modern business enterprise operates on the basis of shifting costs onto others as normal practice to make profits.Kapp, Karl William (1971) Social costs, neo-classical economics and environmental planning. The Social Costs of Business Enterprise, 3rd edition. K. W. Kapp. Nottingham, Spokesman: 305–18 Charles Eisenstein has argued that this method of privatising profits while socialising the costs through externalities, passing the costs to the community, to the natural environment or to future generations is inherently destructive.Einsentein, Charles (2011), "Sacred Economics: Money, Gift and Society in an Age in Transition" (Evolver Editions) Social ecological economist Clive Spash argues that externality theory fallaciously assumes environmental and social problems are minor aberrations in an otherwise perfectly functioning efficient economic system. Internalizing the odd externality does nothing to address the structural systemic problem and fails to recognize the all pervasive nature of these supposed 'externalities'. This is precisely why heterodox economists argue for a heterodox theory of social costs to effectively prevent the problem through the precautionary principle.Berger, Sebastian (ed) (2015). The Heterodox Theory of Social Costs by K. William Kapp. London: Routledge.
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